ASTROSAT CZTI

Data Quality Report

Orbit 03670

Creation date: 2024-06-27T14:32:12.786764
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G05_191T01_9000000476_03670cztM0_level2.evt modeM0/AS1G05_191T01_9000000476_03670cztM0_level2_quad_clean.evt
Size (bytes)1,437,361,920231,891,840
Size1.3 GB 221.1 MB
Events in quadrant A11,388,2591,445,025
Events in quadrant B9,411,4731,455,631
Events in quadrant C8,696,0041,450,716
Events in quadrant D12,760,9191,371,804

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0464425
B0409934
C0392544
D0522574

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188625562.947726%
B188622361.251193%
C188621620.858870%
D1886211526.107518%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 20937 18866 188 188 0.90% 1.00%
B 20937 18866 17 17 0.08% 0.09%
C 20937 18866 20 20 0.10% 0.11%
D 20937 18866 713 713 3.41% 3.78%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 164 1578281 3539.66 2192 2147 445.3
A 13 251 1178930 2642.8 2192 2147 445.3
A 8 4 64947 141.04 2192 2147 445.3
B 15 204 465554 1067.12 2243 2189 434.2
B 0 228 62425 138.72 2243 2189 434.2
B 5 70 60697 134.74 2243 2189 434.2
C 9 247 171901 339.06 2153 2175 500.6
C 1 16 59079 113.68 2153 2175 500.6
C 8 128 23797 43.19 2153 2175 500.6
D 13 172 4139282 8150.96 2100 2045 507.6
D 13 223 297019 581.14 2100 2045 507.6
D 12 110 149958 291.41 2100 2045 507.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
Veto Counter